================================================================== BUG: KCSAN: data-race in fuse_get_req / fuse_set_initialized write to 0xffff888089f81f04 of 4 bytes by task 26774 on cpu 0: fuse_set_initialized+0x15/0x30 fs/fuse/dev.c:81 process_init_reply+0xa88/0xab0 fs/fuse/inode.c:983 fuse_request_end+0x757/0x7a0 fs/fuse/dev.c:326 fuse_dev_do_write+0xbfd/0xe20 fs/fuse/dev.c:1910 fuse_dev_write+0x98/0xe0 fs/fuse/dev.c:1932 call_write_iter include/linux/fs.h:1882 [inline] new_sync_write fs/read_write.c:503 [inline] vfs_write+0x665/0x6f0 fs/read_write.c:578 ksys_write+0xce/0x180 fs/read_write.c:631 __do_sys_write fs/read_write.c:643 [inline] __se_sys_write fs/read_write.c:640 [inline] __x64_sys_write+0x3e/0x50 fs/read_write.c:640 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff888089f81f04 of 4 bytes by task 26765 on cpu 1: fuse_block_alloc fs/fuse/dev.c:86 [inline] fuse_get_req+0xed/0x510 fs/fuse/dev.c:113 fuse_simple_request+0x71/0xd50 fs/fuse/dev.c:492 fuse_lookup_name+0x14e/0x3b0 fs/fuse/dir.c:352 fuse_lookup+0x6d/0x270 fs/fuse/dir.c:390 fuse_atomic_open+0x9c/0x820 fs/fuse/dir.c:533 atomic_open fs/namei.c:2969 [inline] lookup_open fs/namei.c:3075 [inline] open_last_lookups fs/namei.c:3177 [inline] path_openat+0x92b/0x20a0 fs/namei.c:3365 do_filp_open+0xbd/0x1d0 fs/namei.c:3395 do_sys_openat2+0x33b/0x500 fs/open.c:1168 do_sys_open fs/open.c:1184 [inline] __do_sys_openat fs/open.c:1200 [inline] __se_sys_openat fs/open.c:1195 [inline] __x64_sys_openat+0xef/0x110 fs/open.c:1195 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 26765 Comm: syz-executor.0 Not tainted 5.9.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================